A novel method for locating surface mounted components based on elliptical Fourier descriptor

This paper presents an elliptical Fourier descriptor for locating surface mounted components (SMC) in real-time environments. The proposed technique just uses the contour of SMC to estimate the rotational angle and the centroid, which is different from the traditional methods. The first-order harmonic of Elliptical Fourier descriptor is used to estimate the angle of components and the zero-order harmonic is used to estimate the centroid of components. Results of the experiments confirm that the proposed method is a powerful tool for locating SMC.